Table 2.
Knowledge, risk perceptions, smoking behavior, intentions, and stage of change related to cigarette smoke exposure and breast cancer, by group allocation, at follow-up.
| Follow-up assessment | Control, n (%) (n=376) |
Intervention, n (%) (n=242) |
Total, n (%) (n=618) |
ARRa or unadjustedRRb
(95% CI) |
||
| Knowledge and risk perceptions | ||||||
|
|
Responded “Yes” to “Breast cancer is caused by exposure to cigarette smoke.” | 107/376 (28.5) | 96/242 (39.7) | 203/618 (32.8) | 1.33a
(1.05-1.68) |
|
|
|
Responded “Agree” to “Being exposed to secondhand cigarette smoke increases my risk of getting breast cancer.”c | 252/314(80.3) | 199/224 (88.8) | 451/538 (83.8) | 1.10a
(1.02-1.20) |
|
| Smoking behavior and intentions | ||||||
|
|
Responded “Yes” to “Tried smoking.”d | 13/376 (3.5) | 9/239 (3.8) | 22/613 (3.6) | 1.14b
(0.48-2.69) |
|
|
|
Intentions to try smoking in the future | |||||
|
|
|
Probably yes or probably not | 75/354 (21.2) | 51/231 (22.1) | 126/585 (21.5) | 1.00a
(0.98-1.03) |
|
|
|
Definitely not | 279/354 (78.8) | 180/231 (77.9) | 459/585 (78.5) |
|
| Stage of change related to avoidance of SHS | ||||||
|
|
Answered “Yes” to “When you are exposed to secondhand cigarette smoke do you consistently do things to reduce your exposure to the smoke?”e | 241/296 (81.4) | 161/196 (82.1) | 402/492 (81.7) | 0.97a
(0.82-1.15) |
|
aAdjusted relative risk for differences in income, age, parental smoking status, family history of breast cancer, and time elapsed to follow-up.
bUnadjusted relative risk (URR) for differences in income, age, parental smoking status, family history of breast cancer, and time elapsed to follow-up.
c“Strongly agree” and “agree” were collapsed as “agree”, and “strongly disagree” and “disagree” were collapsed as “disagree”, which was the reference group.
dEither tried cigarettes or roll-your-own cigarettes in the time between baseline and follow-up.
eResponded either “Yes, for more than 6 months” or “Yes, but for less than 6 months.”